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198628 = 221723127
BaseRepresentation
bin110000011111100100
3101002110121
4300133210
522324003
64131324
71455043
oct603744
9332417
10198628
11126261
1296b44
136c541
145255a
153dcbd
hex307e4

198628 has 24 divisors (see below), whose sum is σ = 387072. Its totient is φ = 88704.

The previous prime is 198623. The next prime is 198637. The reversal of 198628 is 826891.

198628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 198593 and 198602.

It is not an unprimeable number, because it can be changed into a prime (198623) by changing a digit.

198628 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501 + ... + 1627.

It is an arithmetic number, because the mean of its divisors is an integer number (16128).

2198628 is an apocalyptic number.

It is an amenable number.

198628 is a deficient number, since it is larger than the sum of its proper divisors (188444).

198628 is a wasteful number, since it uses less digits than its factorization.

198628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 169 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 198628 is about 445.6770130936. The cubic root of 198628 is about 58.3463227309.

The spelling of 198628 in words is "one hundred ninety-eight thousand, six hundred twenty-eight".

Divisors: 1 2 4 17 23 34 46 68 92 127 254 391 508 782 1564 2159 2921 4318 5842 8636 11684 49657 99314 198628